Improvement in railway caes



D. T. ROBINSON.

Car Truck.

Patented 0m. 29. 1867.

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IMPROVEMENT IN RAILWAY CARS.

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ToALLWHoM IT MAY CONCERN:

Be it known that I, DANIEL T. ROBINSON, of Boston, in the county ofSuflolk and State of Massachusetts, have invented a new and usefulImprovement in Horse-Railway Cars; and do hereby declare the followingto be a full, clear, and exact description thereof, due reference beinghad to the accompanying drawings making part of this specification, andin which-- A "Figure 1 is an under side .view.

Figure 2 a side elevation.

Figure 3 is a vertical and longitudinal section, taken through theaxle-journals and boxes, and the levers supporting them. a

Figure 4 is a transverse section, taken through the same. 1

The object of this invention is to simplify the construction, andconsequently reduce the cost of manufacture of the running parts ofrailway cars, besides gaining other advantages to be hereinafterdescribed.

The invention consists in dispensing with the ordinary truck-frame nowuniversally employed, and applying the axles and their supporting boxesdirectly to the levers upon which the platform is supported.

In the drawings above referred to as illustrating my invention, Arepresents the platform of a horserailway'earriage, B B being the axlesand C C C, etc., wheels. The journals a a of the axles aresupported inboxes 6 6, suitably fixed to and supported by levers D D, etc., asrepresented in the drawings. These levers are connected at their outeror longer extremities withthe under part of the platform A by a looseconnection, or oncthat will allow ofaslight vertical or longitudinalmovement of them with respect to the platform. A

semi-elliptic spring, d,'is securely bolted to the under side of theplatform, and midway between the inner or shorter arms e e of the leversD D, and so that the free extremities of the surface of the said arms cc. The springs are to be connected with the levers in such manner as toretain the latter in place against any lateral strain to which they maybe subjected, at thesame time allowing a free vertical movement of them.The brake is to be applied to the platform in the usual manner.

The principal advantage gained by the above-described invention isextreme simplicity and cheapness of construction, and ease ofapplication combined with requisite strength.

Another advantage is the fact that the points of support are distributedalong the entire length of the platform, thus preventing the sagging ordepression of the ends of the platform, unavoidable in the present' modeof construction of the running parts of a railway carriage.

I have contemplated the employment of rubber orother elastic springs inplace of the semi-elliptic spring, if in practice it should be foundpreferable.

I claim so constructing the running portion of a railway car as todispense with the ordinary truck, and apply the axle-boxes directly tothe lovers orbars upon which the carriage rests, substantially in mannerand for the purpose as described.

I also claim the peculiar combination and arrangement, with the carriagebody or platform, of the levers D D D, etc., and springs d (7, appliedand operating together in manner and for the purposes as before setforth. I

Witnesses:

FREDERICK CURTIS, C. W. BALDWIN.

DANIEL T. ROBINSON.

springs 'shall rest upon the upper

